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authorSteven A. Falco <sfalco@harris.com>2013-04-22 09:34:39 +0000
committerWolfram Sang <wsa@the-dreams.de>2013-04-23 20:18:34 +0200
commitc39e8e4354ce4daf23336de5daa28a3b01f00aa6 (patch)
tree41ebb9ee4bd1323269c8a8c8849e361ef4910375 /MAINTAINERS
parent73f37dc3aa566f2533e6fda83a7c0a83657bada5 (diff)
i2c: xiic: must always write 16-bit words to TX_FIFO
The TX_FIFO register is 10 bits wide. The lower 8 bits are the data to be written, while the upper two bits are flags to indicate stop/start. The driver apparently attempted to optimize write access, by only writing a byte in those cases where the stop/start bits are zero. However, we have seen cases where the lower byte is duplicated onto the upper byte by the hardware, which causes inadvertent stop/starts. This patch changes the write access to the transmit FIFO to always be 16 bits wide. Signed off by: Steven A. Falco <sfalco@harris.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
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